Staffing Agency Software Build Cost in Amsterdam (2026)

The verdict in three sentences

An agency placing 300 temporary workers a week generates over 1,200 timesheets a month, as many assignment contracts and a weekly payroll with no room for error. Off-the-shelf staffing software handles compliance with the ABU or NBBU collective agreement well, but re-keying between paper timesheets, client portals and payroll remains the friction point. A custom tool or a connected business layer, at 40,000 to 110,000 EUR as a 2026 market estimate, pays off when it removes that re-keying and speeds up client invoicing.

The hidden cost of re-keying

An agency's weekly cycle runs from client order to assignment contract, timesheet, client approval, payroll and invoicing. Every manual step adds error risk and delays cash collection.

An hours error on a temp's payslip costs 30 to 60 minutes to fix, an off-cycle payment and sometimes the worker's loyalty, a scarce resource in Dutch logistics and hospitality.

Off-the-shelf, custom or hybrid

Specialist vendors build in temporary work obligations: ABU or NBBU pay scales and phase system, holiday allowance of 8%, reserved holiday hours, pension through StiPP, payroll tax filing with the Belastingdienst, and SNA certification support. Custom development brings the client and worker experience.

For an independent agency or a network of 2 to 5 branches, hybrid offers the best risk and gain balance. Full custom makes sense for a network building its own model, for example a platform mixing temporary staffing and payrolling.

Components to prioritise

First comes the mobile timesheet: the worker logs hours on a phone, the site or warehouse supervisor approves in one tap, and hours flow to payroll. Second is the client portal: profile requests, e-signature of the hiring agreement, invoice downloads. Third is the candidate pool with certifications (VCA, forklift, BHV first aid) and expiry dates, to propose the right profile within an hour.

On compliance, GDPR governs storage of CVs and ID documents, Dutch law requires ID verification before placement, and e-signatures must follow the eIDAS regulation.

Mini case study

Illustrative example: Eva, director of a logistics staffing agency in Amsterdam, places 300 temporary workers a week. Her team spends 34 hours a week collecting and entering hours, running payroll and invoicing. A business layer with mobile timesheets and payroll integration, priced at 70,000 EUR in this scenario, cuts that to 8 hours, saving 26 hours a week and about 1,250 hours a year. At a loaded cost of 38 EUR an hour, the gain is 47,500 EUR a year. Invoicing 5 days earlier on monthly revenue of 450,000 EUR also frees about 75,000 EUR of working capital. Payback comes in about 18 months on time savings alone.

FAQ

Can we keep our staffing payroll software?

Yes, and it is recommended. The business layer sends approved hours via API or import file, while payroll, collective agreement scales and pension stay calculated by the vendor.

Do workers need to install an app?

Not necessarily: a web app opened from an SMS link works in 90% of cases. Workers sign in with their phone number and a one-time code.

How long for a first rollout?

Allow 12 to 20 weeks for mobile timesheets and payroll integration. The client portal and candidate pool add 6 to 10 weeks.

Can ID checks and onboarding be automated?

Yes, document upload, ID verification and contract signature can run before the first shift. Dutch employers face fines of up to 5,000 EUR per worker when ID records are missing.

What annual budget after go-live?

A market estimate of 15 to 20% of the build cost, so 10,500 to 14,000 EUR a year for a 70,000 EUR project.

Let's scope your project. Tell us how many workers you place each week, your client sectors and your payroll software: we define the scope, timeline and integration in a free quote. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.